| Numéro |
J. Phys. Colloques
Volume 46, Numéro C10, Décembre 1985
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
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|---|---|---|
| Page(s) | C10-805 - C10-808 | |
| DOI | https://doi.org/10.1051/jphyscol:198510176 | |
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 46 (1985) C10-805-C10-808
DOI: 10.1051/jphyscol:198510176
1 Ohio State University, Department of Welding Engineering, Columbus, Ohio 43210, U.S.A.
2 Department of Materials, Engineering, Ben-Gurion University of the Negev, PO Box 653, Beer-Sheva, 84105, Israel
J. Phys. Colloques 46 (1985) C10-805-C10-808
DOI: 10.1051/jphyscol:198510176
HIGH RESOLUTION DIFFERENTIAL TECHNIQUE FOR PHASE VELOCITY AND ATTENUATION MEASUREMENTS OF ULTRASONIC INTERFACE WAVES
S. I. ROKHLIN1, 21 Ohio State University, Department of Welding Engineering, Columbus, Ohio 43210, U.S.A.
2 Department of Materials, Engineering, Ben-Gurion University of the Negev, PO Box 653, Beer-Sheva, 84105, Israel
Abstract
A computerized system is described for measuring viscoelastic properties of thin interface layers using ultrasonic interface waves. This system includes an acoustic bridge for eliminating the temperature dependence of the transducers and the substrates. To check the accuracy of phase velocity measurements, an analog simulation of the measurement method using a highly stable frequency synthesizer was applied. In this way, the resolution of the electronic device for time delay measurements was estimated to be less than 30 psec.